If the tools are bad, nature's voice is muffled. If the tools are good, nature will give us a clear answer to a clear question.

In the history of science it has often happened that the majority was wrong and refused to listen to a minority that later turned out to be right.

A model is done when nothing else can be taken out.

For me too, the periodic table was a passion. ... As a boy, I stood in front of the display for hours, thinking how wonderful it was that each of those metal foils and jars of gas had its own distinct personality.

I am saying that all predictions concerning climate are highly uncertain.

I think that what the machines can do, of course, is wonderful, but it's not the same as what the brain can do.

I like people who are working on practical things and who are working in teams. It's not so important to get the glory. It's much more important to get something that works. It's a better way to live.